The 2011 RPI analysis effort includes a new set of population trend analyses containing information on 26
species of diurnal raptors, grouped into four regions. This analysis forms the foundation of a new assessment of the
status of migratory birds of prey in North America.
Fifty-three datasets were used, each consisting of 10 to 45 years of counts contributed by migration monitoring sites
to HawkCount.org.

To view the 2011 RPI Analysis results, use the menu to the left, or click one of the following: